iveresov@2138: /*
iveresov@2138:  * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
iveresov@2138:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
iveresov@2138:  *
iveresov@2138:  * This code is free software; you can redistribute it and/or modify it
iveresov@2138:  * under the terms of the GNU General Public License version 2 only, as
iveresov@2138:  * published by the Free Software Foundation.
iveresov@2138:  *
iveresov@2138:  * This code is distributed in the hope that it will be useful, but WITHOUT
iveresov@2138:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
iveresov@2138:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
iveresov@2138:  * version 2 for more details (a copy is included in the LICENSE file that
iveresov@2138:  * accompanied this code).
iveresov@2138:  *
iveresov@2138:  * You should have received a copy of the GNU General Public License version
iveresov@2138:  * 2 along with this work; if not, write to the Free Software Foundation,
iveresov@2138:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
iveresov@2138:  *
iveresov@2138:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
iveresov@2138:  * or visit www.oracle.com if you need additional information or have any
iveresov@2138:  * questions.
iveresov@2138:  *
iveresov@2138:  */
iveresov@2138: 
iveresov@2138: 
iveresov@2138: template<CompLevel level>
iveresov@2138: bool SimpleThresholdPolicy::call_predicate_helper(int i, int b, double scale) {
iveresov@2138:   switch(level) {
iveresov@2138:   case CompLevel_none:
iveresov@2138:   case CompLevel_limited_profile:
iveresov@2138:     return (i > Tier3InvocationThreshold * scale) ||
iveresov@2138:            (i > Tier3MinInvocationThreshold * scale && i + b > Tier3CompileThreshold * scale);
iveresov@2138:   case CompLevel_full_profile:
iveresov@2138:    return (i > Tier4InvocationThreshold * scale) ||
iveresov@2138:           (i > Tier4MinInvocationThreshold * scale && i + b > Tier4CompileThreshold * scale);
iveresov@2138:   }
iveresov@2138:   return true;
iveresov@2138: }
iveresov@2138: 
iveresov@2138: template<CompLevel level>
iveresov@2138: bool SimpleThresholdPolicy::loop_predicate_helper(int i, int b, double scale) {
iveresov@2138:   switch(level) {
iveresov@2138:   case CompLevel_none:
iveresov@2138:   case CompLevel_limited_profile:
iveresov@2138:     return b > Tier3BackEdgeThreshold * scale;
iveresov@2138:   case CompLevel_full_profile:
iveresov@2138:     return b > Tier4BackEdgeThreshold * scale;
iveresov@2138:   }
iveresov@2138:   return true;
iveresov@2138: }
iveresov@2138: 
iveresov@2138: // Simple methods are as good being compiled with C1 as C2.
iveresov@2138: // Determine if a given method is such a case.
iveresov@2138: bool SimpleThresholdPolicy::is_trivial(methodOop method) {
iveresov@2138:   if (method->is_accessor()) return true;
iveresov@2138:   if (method->code() != NULL) {
iveresov@2138:     methodDataOop mdo = method->method_data();
iveresov@2138:     if (mdo != NULL && mdo->num_loops() == 0 &&
iveresov@2138:         (method->code_size() < 5  || (mdo->num_blocks() < 4) && (method->code_size() < 15))) {
iveresov@2138:       return !mdo->would_profile();
iveresov@2138:     }
iveresov@2138:   }
iveresov@2138:   return false;
iveresov@2138: }